How can I use the watchdog timer?

The DS80C390 CPU used on the TINI has a built-in hardware watchdog timer that can be controlled using static methods in the
com.dalsemi.system.TINIOS class.

To use the watchdog timer, first set the watchdog timeout length
by invoking
TINIOS.setWatchdogTimeout(int milliseconds)
(an argument of zero will disable the watchdog timer).
You must then invoke TINIOS.feedWatchdog()
periodically - if you neglect to invoke feedWatchdog()
before the timer expires, the TINI will be rebooted.

slush provides the wd command which does
the equivalent of the above. Thus, you can use wd
to start and feed the watchdog timer from the slush
command-line.

The watchdog timer
gives you a way to add reliablity to your application - if the
software fails for some reason and the watchdog does not
get fed, the CPU gets reset to a well-known state.
See the TINI API documentation for more details.

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